Can opener



FIG. 1 is a perspective view of a can opener showing our new design;

FIG. 2 is a top view thereof;

FIG. 3 is a bottom view thereof;

FIg. 4 is a front view thereof;

FIG. 5 is a right side view thereof;

FIG. 6 is a rear view thereof; and,

FIG. 7 is a left side view thereof. 

The ornamental design for a can opener, as shown. 